Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies

Species with disjunct distributions have long puzzled evolutionary biologists and biogeographers. Long-distance dispersal can play a pivotal role in generating intra-specific disjunct distributions, initiating early stages of allopatric speciation and leading to eventual interspecific disjunctions....

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Autores: Palahí i Torres, Aleix, García-Berro, Aurora, Dincă, Vlad, Vodă, Raluca, Dapporto, Leonardo, Backström, Niclas, Vila, Roger, Pierce, Naomi E., Talavera, Gerard
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/391060
Acceso en línea:http://hdl.handle.net/10261/391060
Access Level:acceso abierto
Palabra clave:Biogeographic disjunctions
Demography
Introgression
Last Glacial Maximum
Long- distance dispersal
Vanessa butterflies
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dc.title.none.fl_str_mv Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
title Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
spellingShingle Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
Palahí i Torres, Aleix
Biogeographic disjunctions
Demography
Introgression
Last Glacial Maximum
Long- distance dispersal
Vanessa butterflies
title_short Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
title_full Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
title_fullStr Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
title_full_unstemmed Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
title_sort Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
dc.creator.none.fl_str_mv Palahí i Torres, Aleix
García-Berro, Aurora
Dincă, Vlad
Vodă, Raluca
Dapporto, Leonardo
Backström, Niclas
Vila, Roger
Pierce, Naomi E.
Talavera, Gerard
author Palahí i Torres, Aleix
author_facet Palahí i Torres, Aleix
García-Berro, Aurora
Dincă, Vlad
Vodă, Raluca
Dapporto, Leonardo
Backström, Niclas
Vila, Roger
Pierce, Naomi E.
Talavera, Gerard
author_role author
author2 García-Berro, Aurora
Dincă, Vlad
Vodă, Raluca
Dapporto, Leonardo
Backström, Niclas
Vila, Roger
Pierce, Naomi E.
Talavera, Gerard
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Museum of Comparative Zoology (US)
Ministerio de Ciencia e Innovación (España)
Generalitat de Catalunya
Swedish Research Council
Ministero dell'Istruzione, dell'Università e della Ricerca
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Biogeographic disjunctions
Demography
Introgression
Last Glacial Maximum
Long- distance dispersal
Vanessa butterflies
topic Biogeographic disjunctions
Demography
Introgression
Last Glacial Maximum
Long- distance dispersal
Vanessa butterflies
description Species with disjunct distributions have long puzzled evolutionary biologists and biogeographers. Long-distance dispersal can play a pivotal role in generating intra-specific disjunct distributions, initiating early stages of allopatric speciation and leading to eventual interspecific disjunctions. Vanessa butterflies exhibit diverse movement behaviours, from low-dispersal species with restricted distributions to others that engage in annual extensive migratory cycles. The biogeographic history of Vanessa presents intriguing cases of both intra- and interspecific disjunctions. Vanessa atalanta is present in the Nearctic and Western Palearctic but is absent in Asia, while its sister species V.tameamea is endemic to Hawaii. Vanessa indica occurs only in Asia, and its sister species, V.vulcania, is endemic to Macaronesia. Here, we investigate this conundrum through population genomics and demographic analyses of Vanessa atalanta using ddRAD data from 70 samples across its entire distributional range, identifying two genetically differentiated populations separated by the Atlantic Ocean. Demographic simulations and phylogenetic analyses suggest that these originated via long-distance dispersal from the Nearctic to Europe around the Last Glacial Maximum. Hybridisation tests revealed introgression between the Palearctic population of V.atalanta and V.¿indica, indicating that their distributions overlapped during V.atalanta's colonisation of Europe. We hypothesise that V.atalanta caused a species displacement of V.indica from Europe to Asia, explaining their current allopatric distributions¿a scenario that is supported by ecological niche modelling. Together, our results illustrate the role of long-distance dispersal and species interactions in shaping complex biogeographic patterns.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/391060
url http://hdl.handle.net/10261/391060
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-152239NB-I00
http://dx.doi.org/10.1111/mec.17781
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling Trans- Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa ButterfliesPalahí i Torres, AleixGarcía-Berro, AuroraDincă, VladVodă, RalucaDapporto, LeonardoBackström, NiclasVila, RogerPierce, Naomi E.Talavera, GerardBiogeographic disjunctionsDemographyIntrogressionLast Glacial MaximumLong- distance dispersalVanessa butterfliesSpecies with disjunct distributions have long puzzled evolutionary biologists and biogeographers. Long-distance dispersal can play a pivotal role in generating intra-specific disjunct distributions, initiating early stages of allopatric speciation and leading to eventual interspecific disjunctions. Vanessa butterflies exhibit diverse movement behaviours, from low-dispersal species with restricted distributions to others that engage in annual extensive migratory cycles. The biogeographic history of Vanessa presents intriguing cases of both intra- and interspecific disjunctions. Vanessa atalanta is present in the Nearctic and Western Palearctic but is absent in Asia, while its sister species V.tameamea is endemic to Hawaii. Vanessa indica occurs only in Asia, and its sister species, V.vulcania, is endemic to Macaronesia. Here, we investigate this conundrum through population genomics and demographic analyses of Vanessa atalanta using ddRAD data from 70 samples across its entire distributional range, identifying two genetically differentiated populations separated by the Atlantic Ocean. Demographic simulations and phylogenetic analyses suggest that these originated via long-distance dispersal from the Nearctic to Europe around the Last Glacial Maximum. Hybridisation tests revealed introgression between the Palearctic population of V.atalanta and V.¿indica, indicating that their distributions overlapped during V.atalanta's colonisation of Europe. We hypothesise that V.atalanta caused a species displacement of V.indica from Europe to Asia, explaining their current allopatric distributions¿a scenario that is supported by ecological niche modelling. Together, our results illustrate the role of long-distance dispersal and species interactions in shaping complex biogeographic patterns.This work was funded by the Putnam Expeditionary Fund from the Museum of Comparative Zoology (MCZ, Harvard University) to G.T. and N.E.P; by the grant LINKA20399 from the CSIC iLink program to G.T., N.B, R.Vi and N.E.P; by the grants PID2020-117739GA-I00 and PID2023-152239NB-I00 (MICIU/AEI/ 10.13039/501100011033 and ERDF, EU) and 2021-SGR-01334 (Departament de Recerca i Universitats, Generalitat de Catalunya) to G.T.; by grants PID2022-139689NB-I00 (MICIU/AEI/ 10.13039/501100011033 and ERDF, EU) and 2021-SGR-00420 (Departament de Recerca i Universitats, Generalitat de Catalunya) to R.Vi. N.B. is supported by a research project grant from the Swedish Research Council FORMAS (ID#: 2019-00670). L.D. is supported by NBFC, funded by the Italian Ministry of University and Research, PNRR, Project CN00000033.1 Introduction 2 Materials and Methods 2.1 Sampling 2.2 ddRAD Library Preparation and Sequencing 2.3 ddRAD Data Processing and Assembly 2.4 Population Structure Analyses 2.5 Phylogenetics 2.6 Demographic Inference With StairwayPlot2 2.7 Model-Based Demographic History Scenarios 2.8 Introgression Tests 2.9 Ecological Niche Modeling 2.10 Wing Morphometrics 3 Results 3.1 ddRAD Assembly and Variant Calling 3.2 Inter-Continental Population Structure in V. atalanta 3.3 Demographic Oscillations Through the Quaternary 3.4 Model-Based Inference of the Expansion of V. atalanta 3.5 Evidence for Introgression Between Allopatric V. atalanta and V. indica 3.6 Ecological Niche Modeling 3.7 Morphometrics 4 Discussion 4.1 Population Structure Is Consistent With a Continental Divide in V. atalanta 4.2 Phylogeographic Disjunction as a Consequence of a Trans-Atlantic Dispersal Event 4.3 Introgression by V. atalanta in the Palearctic Explains Biogeographic Disjunction Between V. indica and V. vulcania Author Contributions Acknowledgements Conflicts of InterestPeer reviewedJohn Wiley & SonsMuseum of Comparative Zoology (US)Ministerio de Ciencia e Innovación (España)Generalitat de CatalunyaSwedish Research CouncilMinistero dell'Istruzione, dell'Università e della RicercaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2025202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/391060reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117739GA-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-152239NB-I00http://dx.doi.org/10.1111/mec.17781Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3910602026-05-22T06:33:51Z
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